Comment 15 for bug 295292

I made a script which works for me in every case. Put it in /etc/pm/sleep.d

On suspend/hibernate it stores current calibration values and restore them on resume/thaw. It connects to X server with display :0.0 with user that is owner of that process. There is a need to sleep for 2 seconds before restoring values, without that sleep something overwrites restored values.